There are 6 mines at warp-in 22km - 70km away.
After one mine explodes 4 new mines spawn. After shooting 4 more mines there's another spawn of 4 mines + the "Amarrian drone mine 1".
After blowing up "Amarrian drone mine 1" the mission is over.

Upon firing on the Mines, 4 Amarr Smart Drones (really Rogue Drone Cruisers and Battlecruisers) will appear around the mine, and your ship (and any in your fleet on the grid) will take 600-1000 damage. Destroy the drones after each mine to avoid being swamped.

For snipers: snipe all of the mines from as far away as you can. Keep shooting the mines until the "Amarrian drone mine 1" spawns. Blow that one up, and mission is completed. (Note: When I did the mission Drones didn't attack until blowing up the last 3 mines - NikalVaszol.) Using this blitz you can do the mission in less than 10 minutes, easily.

For ships with high alpha strike: if you can kill a mine in one volley (by grouping your turrets/launchers), it will not spawn any NPCs. Mines have 1200 hp each. Using this method you can complete the mission in two minutes in absolute safety.

You warp in the first pocket using an accelleration gate, no aggro on warp in. There are 3 groups, with increasingly larger size ships, all faction (so no bounty). The 2 groups closest to you (40km and 80km) can be pulled or sniped. If you need to get closer to the 3rd group to pull them (120km) they will aggro you when you are 80 to 90km away. The gate at about 45 km distance is locked, so you need to remove all ships anyway. The optimal range of the battleships is around 40 km usually.